Maybe... I've seen it the other way.
You put in the 10 keepers in rounds 1-10.
Then your draft starts in round 11. (Which is a better way to appreciate a player's actualy draft value).
The IMPORTANT thing though, if you do it that way, is for your GMs to understand that when they TRADE DRAFT PICKS, an 11th round pick traded MEANS the FIRST REDRAFT ROUND in future years.
I know this way (keepers input to rounds 1-10) works for sure.
I can not verify it the way you've done it.